ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 42 Issue 5 > 2016,42(5):598-606. DOI:10.7519/j.issn.1000-0526.2016.05.009 Prev Next
MultiTime Scale Analysis of Megacities Heat Island Effect in BeijingTianjinHebei Region from 1971 to 2010
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
Based on a homogenized daily air temperature dataset from 1971 to 2010 and quantity controlled hourly air temperature data of BeijingTianjinHebei Region in 2011, the multiscale temporal characteristics of urban heat island effect for Beijing, Tianjin and Shijiazhuang are analyzed in this paper. The results show that the urban heat island effect on the mean, maximum, minimum air temperature is asymmetrical. The heat island effect on the minimum temperature is the strongest, followed by the effect on the mean temperature and the effect on the maximum temperature is the weakest. The mean temperature in Beijing is affected by urban heat island effect most significantly, followed by Tianjin’s. Shijiazhuang’s heat island effect is relatively weak, but showing the trend of significantly increasing during the late 40 years, up to 0.13℃ every 10 years. For the maximum temperature, urban heat island effect in Shijiazhuang is the strongest, followed by Beijing’s. Tianjin’s heat island effect is relatively weak. Beijing’s heat island effect on maximum temperature increases slowly during the 40 years, being 0.06℃ every decade. No significant change in Tianjin. Shijiazhuang’s heat island effect shows a weak downward trend. For the minimum temperature, Beijing’s heat island effect is the strongest, then is Tianjin’s. Shijiazhuang’s heat island effect is the weakest. Tianjin’s heat island effect on lowest temperature increases in the 40 years, 0.18℃ every decade. Tianjin has no significant change, followed by the Shijiazhuang’s. Beijing’s heat island effect shows a slight downward trend. Generally, the three cities heat island effect intensities for mean and maximum air temperature are characterized by weak in summer and strongest in winter, for maximum temperature, they are different with change of seasons. The seasonal heat island effect from automatic weather station is similar to the heat island effect calculated from the data in 1971-2010. The heatisland effect in a day is characterized by low during the daytime and high during the nighttime.
Keywords:
Project Supported:
Clc Number:
Mobile website
